package firstchi.barhandler;

import android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.style.UpdateAppearance;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;

public class MainActivity extends AppCompatActivity {
    ProgressBar bar = null;
    Button button = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bar = (ProgressBar) findViewById(R.id.bar);
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new ButtonListener());
    }
    Handler updateBarHandler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            bar.setProgress(msg.arg1);

            updateBarHandler.post(updateThread);
        }
    };

    class ButtonListener implements View.OnClickListener {
        @Override
        public void onClick(View view) {
            bar.setVisibility(View.VISIBLE);
            updateBarHandler.post(updateThread);
        }
    }


    Runnable updateThread = new Runnable() {
        int i = 0;

        @Override
        public void run() {
            System.out.println("start Thread");
            i = i + 10;
            Message msg = updateBarHandler.obtainMessage();
            msg.arg1 = i;
            try  {
                Thread.sleep(1000);


            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            updateBarHandler.sendMessage(msg);
            if (i==100){
                updateBarHandler.removeCallbacks(updateThread);
            }

        }
    };
}
